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Stock-Based Compensation - Additional Information (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Feb. 28, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expected dividend yield (in percentage)   0.00% 0.00% 0.00%
Total unamortized compensation costs, net of estimated forfeitures related to unvested stock options   $ 8.9    
Unamortized compensation costs related to unvested stock options, expected period of recognition (in years)   1 year 8 months 12 days    
RSUs issued and unvested        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unamortized compensation costs related to unvested stock options, expected period of recognition (in years)   2 years 3 months 18 days    
Total unamortized compensation costs, net of estimated forfeitures related to restricted stock unit   $ 44.5    
Performance shares        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share Based Compensation Arrangement By Share Based Payment Award Performance Period 2 years      
Cumulative share based payment award equity instruments other than option expenses   $ 4.8    
Performance shares | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Performance threshold percentage (in percentage) 75.00%      
Percentage of performance target to be earned at performance threshold (in percentage) 50.00%      
Share based compensation arrangement by share based payment award equity instruments other than options grants in period fair value $ 18.5      
Performance shares | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Performance threshold percentage (in percentage) 125.00% 134.00%    
Percentage of performance target to be earned at performance threshold (in percentage) 200.00%      
ESPP        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total unamortized compensation costs, net of estimated forfeitures related to unvested stock options   $ 1.1    
Unamortized compensation costs related to unvested stock options, expected period of recognition (in years)   10 months 24 days